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Release notes

Email API Now Available in Beta

29, Jul 2026

Email was the last primitive you needed a second vendor for. Not anymore. The Telnyx Email API is now available in beta, bringing transactional and marketing email to the same platform you already use for SMS, voice, and WhatsApp. One API key, one dashboard, one bill.

What does this mean for customers?

For existing Telnyx customers, email is an add-on. For new customers, it is a reason to consolidate. Send receipts, password resets, OTPs, alerts, and marketing content programmatically through one REST API. No second vendor, no second contract, no second invoice.

What's available in beta

Sending

  • Transactional and marketing email via POST /v2/email_messages with from, to, cc, bcc, reply_to, subject, html_body, text_body, custom headers, attachments, tags, and metadata
  • Batch sending with multi-status response
  • Scheduled sends with cancel
  • Base64 attachments

Templates

  • Liquid templates with server-side rendering and preview without sending

Tracking

  • Real-time webhooks for queued, sent, delivered, opened, clicked, bounced, deferred, failed, unsubscribed, complained, and rejected
  • Event polling API for services without a public webhook URL
  • Per-message status and full event history lookup

Deliverability, built in

  • SPF, DKIM, and DMARC generation, DNS drift monitoring, per-provider throttling for Gmail and Outlook
  • Domain reputation enforcement, domain health summary endpoint

Suppression and compliance

  • Two-tier suppression check at API and inject time, soft-bounce escalation
  • CSV import/export with auto-detection of SendGrid, Mailgun, and SES formats
  • Unsubscribe management: group-scoped opt-outs and RFC 8058 one-click unsubscribe (Gmail/Yahoo bulk sender requirement)

Validation and domain auth

  • Email validation (single and batch), free
  • Domain authentication with five DNS records (ownership, SPF, DKIM, MX, DMARC)
  • Open, click, and unsubscribe tracking with per-domain toggles

One platform

  • Email alongside SMS, voice, WhatsApp, and fax under one API key

Developer documentation

Check out the developer documentation to learn more. To set up your sending domain, use the API (bring your own domain with verification, or use a shared domain for self-serve).

Pricing

See our pricing.